FormEntityAddForm.php in Flexiform 8

Namespace

Drupal\flexiform\Form

File

src/Form/FormEntityAddForm.php

<?php

namespace Drupal\flexiform\Form;

use Drupal\Core\Ajax\AjaxResponse;
use Drupal\Core\Ajax\CloseModalDialogCommand;
use Drupal\Core\Ajax\SetDialogTitleCommand;
use Drupal\Core\Ajax\ReplaceCommand;
use Drupal\Core\Form\FormStateInterface;
use Drupal\flexiform\FlexiformEntityFormDisplayInterface;
use Drupal\flexiform\MultipleEntityFormState;

/**
 * Provides a form for adding new entity forms.
 */
class FormEntityAddForm extends FormEntityBaseForm {

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'flexiform_form_entity_add';
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state, FlexiformEntityFormDisplayInterface $form_display = NULL) {
    $form_state = MultipleEntityFormState::createForForm($form, $form_state);
    parent::buildForm($form, $form_state, $form_display);
    $available_plugins = $this->pluginManager
      ->getDefinitionsForContexts($this
      ->formEntityManager($form_state)
      ->getContexts());

    // Add prefix and suffix for ajax purposes.
    $form['#prefix'] = '<div id="flexiform-form-entity-add-wrapper">';
    $form['#suffix'] = '</div>';
    if ($plugin_id = $form_state
      ->get('selected_form_entity')) {
      $plugin = $this->pluginManager
        ->createInstance($plugin_id, [
        'manager' => $this
          ->formEntityManager($form_state),
      ]);
      return $this
        ->buildConfigurationForm($form, $form_state, $plugin);
    }
    else {

      // Prepare selector form.
      $plugin_options = [];
      foreach ($available_plugins as $plugin_id => $plugin_definition) {
        if (empty($plugin_definition['no_ui'])) {
          $plugin_options[$plugin_id] = $plugin_definition['label'];
        }
      }
      $form['form_entity'] = [
        '#type' => 'select',
        '#required' => TRUE,
        '#options' => $plugin_options,
        '#title' => $this
          ->t('Form Entity'),
      ];
      $form['actions'] = [
        '#type' => 'actions',
        'submit' => [
          '#type' => 'submit',
          '#value' => $this
            ->t('Continue'),
          '#submit' => [
            [
              $this,
              'submitSelectPlugin',
            ],
          ],
          '#ajax' => [
            'callback' => [
              $this,
              'ajaxSubmit',
            ],
            'event' => 'click',
          ],
        ],
      ];
    }
    return $form;
  }

  /**
   * Submit the plugin selection.
   */
  public function submitSelectPlugin(array $form, FormStateInterface $form_state) {
    $form_state
      ->set('selected_form_entity', $form_state
      ->getValue('form_entity'));
    $form_state
      ->setRebuild();
  }

  /**
   * {@inheritdoc}
   */
  public function ajaxSubmit(array $form, FormStateInterface $form_state) {
    $response = new AjaxResponse();
    if ($form_state
      ->get('selected_form_entity')) {
      $response
        ->addCommand(new ReplaceCommand('#flexiform-form-entity-add-wrapper', $form));
      $response
        ->addCommand(new SetDialogTitleCommand(NULL, $this
        ->t('Configure form entity')));
    }
    else {
      $response
        ->addCommand(new CloseModalDialogCommand());
    }
    return $response;
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    parent::submitForm($form, $form_state);
    $form_state
      ->set('selected_form_entity', FALSE);
  }

}

Classes

Name	Description
FormEntityAddForm	Provides a form for adding new entity forms.